13-07-2016
Mathematics

Answered

F(X)=2x^2 +1 find and simplify:: if f(a) =19 find a.

Isn't a just 19??

Verified Answer :

konrad509 konrad509

13-07-2016

\(2a^2+1=19\\ 2a^2=18\\ a^2=9\\ a=-3 \vee a=3\)

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